These patches allowed me to run arm64 and armv7 version of
dind image on amd64.

This patchset includes a few patches marked [!MERGE],
which are not for the upsteam merge. They are included here just to
show the context to reviewers.

You can find my test setup here:
https://github.com/yamt/garbage/tree/master/binfmt-aarch64-install

YAMAMOTO Takashi (11):
  linux-user: handle /proc/self/exe for execve
  linux-user: Fix the execfd case of /proc/self/exe open
  linux-user: dup the execfd on start up
  linux-user: make exec_path realpath
  linux-user: Implement pivot_root
  linux-user: add get_exe_path
  linux-user: simplify is_proc_myself
  linux-user: Implement exec of /proc/$pid/exe of qemu process
  linux-user: Make the qemu detection for /proc/$pid/exe a bit
    conservative
  linux-user: a crude hack for libcontainer (CLONE_PARENT) [!MERGE]
  linux-user: always assume preserve_argv0 for now [!MERGE]

 linux-user/main.c    |  57 ++++++++++++++-
 linux-user/qemu.h    |   2 +
 linux-user/syscall.c | 171 ++++++++++++++++++++++++++++++++++++++++---
 3 files changed, 219 insertions(+), 11 deletions(-)

-- 
2.21.1 (Apple Git-122.3)

Patchew URL: https://patchew.org/QEMU/20210531055019.10149-1-yamamoto@midokura.com/



Hi,

This series seems to have some coding style problems. See output below for
more information:

Type: series
Message-id: 20210531055019.10149-1-yamamoto@midokura.com
Subject: [PATCH v2 00/11] linux-user changes to run docker

=== TEST SCRIPT BEGIN ===
#!/bin/bash
git rev-parse base > /dev/null || exit 0
git config --local diff.renamelimit 0
git config --local diff.renames True
git config --local diff.algorithm histogram
./scripts/checkpatch.pl --mailback base..
=== TEST SCRIPT END ===

Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
Switched to a new branch 'test'
9266033 linux-user: always assume preserve_argv0 for now [!MERGE]
c47e5f7 linux-user: a crude hack for libcontainer (CLONE_PARENT) [!MERGE]
3918e1b linux-user: Make the qemu detection for /proc/$pid/exe a bit conservative
c085fdc linux-user: Implement exec of /proc/$pid/exe of qemu process
1183bf9 linux-user: simplify is_proc_myself
3d2e26d linux-user: add get_exe_path
4468f68 linux-user: Implement pivot_root
42242cc linux-user: make exec_path realpath
057e7e4 linux-user: dup the execfd on start up
187d6d2 linux-user: Fix the execfd case of /proc/self/exe open
02ef5e5 linux-user: handle /proc/self/exe for execve

=== OUTPUT BEGIN ===
1/11 Checking commit 02ef5e5d9e50 (linux-user: handle /proc/self/exe for execve)
2/11 Checking commit 187d6d29d488 (linux-user: Fix the execfd case of /proc/self/exe open)
3/11 Checking commit 057e7e49d4fe (linux-user: dup the execfd on start up)
4/11 Checking commit 42242cc0513b (linux-user: make exec_path realpath)
5/11 Checking commit 4468f68480f3 (linux-user: Implement pivot_root)
WARNING: architecture specific defines should be avoided
#23: FILE: linux-user/syscall.c:8257:
+#if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root)

total: 0 errors, 1 warnings, 33 lines checked

Patch 5/11 has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.
6/11 Checking commit 3d2e26daa82e (linux-user: add get_exe_path)
7/11 Checking commit 1183bf9702cb (linux-user: simplify is_proc_myself)
8/11 Checking commit c085fdc89c7c (linux-user: Implement exec of /proc/$pid/exe of qemu process)
9/11 Checking commit 3918e1b7eee5 (linux-user: Make the qemu detection for /proc/$pid/exe a bit conservative)
10/11 Checking commit c47e5f77ef07 (linux-user: a crude hack for libcontainer (CLONE_PARENT) [!MERGE])
11/11 Checking commit 9266033e47cb (linux-user: always assume preserve_argv0 for now [!MERGE])
ERROR: if this code is redundant consider removing it
#26: FILE: linux-user/main.c:729:
+#if 0

total: 1 errors, 0 warnings, 38 lines checked

Patch 11/11 has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

=== OUTPUT END ===

Test command exited with code: 1


The full log is available at
http://patchew.org/logs/20210531055019.10149-1-yamamoto@midokura.com/testing.checkpatch/?type=message.
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